A comparative study on the quality and flavor of dromedary and bifocal camel yogurt
Objective:This study aimed to analyze and compare the quality and flavor of dromedary and bifocal camel yogurt.Methods:Through physicochemical analysis,texture analysis,rheological analysis,SPME-GC-MC,sensory evaluation,etc.,the overall differences in quality and flavor of dromedary and bifocal camel yogurt were determined.Results:The viable bacteria count,protein,fat,total solids content,and antioxidant activity of dromedary camel yogurt were lower than those of bifocal camel yogurt(P＜0.05),but it exhibited better storage stability than bifocal camel yogurt(P＜0.05).Texture analysis showed that the hardness of bifocal camel yogurt was significantly higher than that of dromedary camel yogurt(P＜0.05),while the adhesiveness,cohesiveness,and gumminess of dromedary camel yogurt were significantly higher than those of bifocal camel yogurt(P＜0.05).No significant differences were found in elasticity and chewiness between the two.Rheological characteristics showed that both single and bifocal camel yogurt exhibited shear-thinning flow characteristics,with initial apparent viscosity values of 5.82 and 2.33 Pa·s,respectively.Both formed thixotropic loops,with areas of 2 421.82 and 3 674.16 Pa/s,respectively.The exhibited gel properties,with dromedary camel yogurt having higher elasticity and viscosity.A total of 48 volatile flavor substances were detected in single and bifocal camel yogurt,with significant differences in the content of volatile flavor substances shared by the two camel yogurt types(P＜0.05).The content of volatile acids,esters,aldehydes,ketones,and other substances with lower flavor thresholds was relatively higher in bifocal camel yogurt,making its flavor superior.The sensory evaluation score of dromedary camel yogurt was higher than that of bifocal camel yogurt(P＜0.05).Conclusion:Bifocal camel yogurt has higher nutritional and flavor substance content,while dromedary camel yogurt exhibits superior storage stability and taste.
国家科技期刊平台
NSTL
万方数据
